CN2904149Y - Network weighing controller - Google Patents
Network weighing controller Download PDFInfo
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- CN2904149Y CN2904149Y CN 200520047919 CN200520047919U CN2904149Y CN 2904149 Y CN2904149 Y CN 2904149Y CN 200520047919 CN200520047919 CN 200520047919 CN 200520047919 U CN200520047919 U CN 200520047919U CN 2904149 Y CN2904149 Y CN 2904149Y
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Abstract
The utility model relates to a network-based weighing controller which comprises the weighing sensor, the analog-digital converter connected with the weighing sensor, the CPU single-chip processor module connected with the analog-digital converter, the nixie tube connected with the CPU single-chip processor module respectively via the data bus and the chip selection line, the printer interface and the keyboard. The weighing controller is characterized to comprise the liquid crystal display, the control circuit and the communication circuit. The liquid crystal display connects with the CPU single-chip processor module via the bus and the chip selection line. The control circuit connects with the CPU single-chip processor module via the signal line. The communication circuit connects with the communication port at the CPU single-chip processor module via the receiving signal line and transmitting signal line. The output terminal of the communication circuit connects with the RS485 bus. The CPU single-chip processor module performs the interactive data and command transmission with the computer via the communication circuit. The utility model could write the program and automatically acquire and store the data. The weighing is of high precision and the information transmission is reliable. The RS485 bus is used to realize the computer-based network management.
Description
Technical field
The utility model relates to a kind of projection electronic weighing weighing apparatus, is specifically related to a kind of networking controller of weighing.
Background technology
See also shown in Figure 1ly, existing a kind of projection electronic weighing weighing apparatus 10 circuit are made up of weighing sensor 11, analog to digital converter 12, microcontroller MCU13, charactron display 14, keyboard 15; The input end of weighing sensor 11 links to each other with the weighing parts, the output terminal of weighing sensor 11 is connected with the input end of analog to digital converter 12, the output terminal of analog to digital converter A12 is connected with the input end of microcontroller MCU13, and microcontroller MCU13 is connected with the input end of charactron display 14 and the output terminal of keyboard 15 respectively.When using, basic parameters such as keyboard 15 input unit prices, claimed the weight signal of article to be converted to voltage signal (simulating signal) input analog-to-digital converter 12 through weighing sensor 11, analog to digital converter 12 is converted to digital signal input microprocessor MCU13, microprocessor MCU13 sends to charactron display 14 with the weight digital signal and shows after treatment.Microprocessor MCU13 scan round keyboard A15 has judged whether that button presses, and carries out different processing according to different buttons.
The shortcoming of this projection electronic weighing weighing apparatus is:
1. prior art projection electronic weighing weighing apparatus is owing to be that unit uses, and therefore no network communication and control function can not be connected in the network system and work, and can not be applicable to the network system of the reinforced control of weighing in the commercial production;
2. prior art projection electronic weighing weighing apparatus can only show current weight, total price in real time owing to only the charactron display is set, and Presentation Function is single;
3. prior art projection electronic weighing weighing apparatus uses under the rugged surroundings of industry spot, because poor anti jamming capability easily produces error code, is difficult to guarantee weighing precision;
4. the control flow of the weighing weighing apparatus of prior art is just to fixedly install when instrument is dispatched from the factory, and the user is non-programmable, has limited the expanded function of weighing weighing apparatus greatly.
Summary of the invention
The purpose of this utility model provides a kind of networking controller of weighing, it can be applied in the large-scale network management system, have the performance and the high noise immunity of quick sampling and high-speed computation, and possess the high precision and the high stability of weighing, can satisfy the requirement of Weighing; Simultaneously the user can directly revise on ready-made program or by programming voluntarily, but expanded application in network management system commercial, industrial processes, and the pattern of weighing that can automatically switch, automatic data collection, printing preservation data automatically.
The purpose of this utility model is achieved through the following technical solutions:
A kind of networking controller of weighing comprises: computing machine, RS485 bus, many networkings controller of weighing;
Computing machine is connected with the RS485 bus by the RS485 converter that is arranged in the computing machine; Many networkings controller of weighing is attempted by on the RS485 bus, and computing machine is by RS485 bus and each networking weigh controller bi-directional transfer of data and order;
The described controller of weighing comprises: weighing sensor, the analog to digital converter that links to each other with weighing sensor, the CPU one-chip computer module that is connected with analog to digital converter, pass through charactron, printer interface and the keyboard that data bus DB and chip select line CS5, CS2, CS3 are connected with the CPU one-chip computer module respectively;
Be characterized in also comprising: LCD, control circuit and telecommunication circuit;
Described LCD is connected with the CPU one-chip computer module with chip select line CS4 by bus DB;
Described control circuit is connected with the CPU one-chip computer module with control line by signal wire;
Described telecommunication circuit is connected with the communication port of CPU one-chip computer module with transmission signal wire TX by received signal line RX, output terminal D+, the D-of telecommunication circuit is connected with the RS485 bus respectively, and the CPU one-chip computer module is by telecommunication circuit and RS485 bus and computer bidirectional transmission data and order.
In controller was weighed in above-mentioned networking, wherein, described CPU one-chip computer module was made up of crystal oscillating circuit, watchdog circuit, clock circuit, code translator and the driving circuit of microprocessor, connection microprocessor.
In controller was weighed in above-mentioned networking, wherein, described driving circuit was made up of first driving circuit, second driving circuit, the 3rd driving circuit; A plurality of data terminals of first driving circuit, second driving circuit, the 3rd driving circuit are connected with each data terminal of microprocessor by data bus DB respectively; The corresponding connection of each chip selection signal output terminal of the chip selection signal end of first driving circuit, second driving circuit, the 3rd driving circuit and code translator; A plurality of output terminals of first driving circuit respectively with corresponding connection of each output terminal of each Duan Duan and the keyboard of each charactron; The corresponding connection of everybody end of a plurality of output terminals of second driving circuit and each charactron; A plurality of input ends of the 3rd driving circuit respectively with the corresponding connection of each incoming line of keyboard, a plurality of output terminals of the 3rd driving circuit respectively with the corresponding connection of each signal input end of control circuit, the corresponding connection of each equipment state signal output part of a plurality of input ends of the 3rd driving circuit and control circuit.
In controller was weighed in above-mentioned networking, wherein, described keyboard was made up of individual button; Wherein, numerical key [0-9], function key [A], [B], [startup], [stopping], [pre-skin], [printing], [zero setting], [peeling], [maintenance], [accumulative total], [setting], [function], [removing] and [input].
In controller is weighed in above-mentioned networking, wherein, described control circuit is made up of photoelectricity coupling device assembly output circuit and photoelectrical coupler assembly input circuit, a plurality of input ends of photoelectrical coupler assembly output circuit are connected with a plurality of output terminals of the 3rd driving circuit of CPU one-chip computer module by a control signal wire, a plurality of output terminals of photoelectrical coupler assembly output circuit respectively with the corresponding connection of control end of each relay of external unit, the action of CPU one-chip computer module control external unit; A plurality of input ends of photoelectricity coupling device assembly input circuit are connected with each data terminal of external unit gauge tap/button, a plurality of input ends of the driving circuit in a plurality of output terminals of photoelectricity coupling device assembly input circuit and the CPU one-chip computer module are connected, and the CPU one-chip computer module reads the operating state of external unit by photoelectricity coupling device assembly input circuit.
In controller was weighed in above-mentioned networking, wherein, described telecommunication circuit was made of the RS485 converter; The RX end P5 of RS485 converter is connected by RX received signal line with the RX end P10 of the microprocessor of CPU one-chip computer module, and the TX end P8 of RS485 converter sends signal wire with the TX end P11 of the microprocessor of CPU one-chip computer module by TX and is connected; The D+ end P3 of RS485 converter is connected with the RS485 bus with D-end P2.
The utility model makes it compared with prior art owing to adopted above-mentioned technical scheme, has following advantage and good effect:
1. the utility model is owing to be provided with powerful CPU one-chip computer module, and the user can directly revise on ready-made program or be programmed voluntarily by the user, the pattern of weighing that can automatically switch, and automatic data collection is printed automatically and is preserved data;
2. the utility model makes it possess the high precision and the high stability of weighing owing to be equipped with high-precision A/D analog to digital converter specially, can satisfy the requirement of Weighing;
3. the utility model is provided with watchdog circuit owing to adopt the photoisolator assembly in the control circuit that is provided with in the CPU one-chip computer module, effectively raises anti-interference, guarantees the information reliable transmission;
4. the utility model can be attempted by on 485 buses owing to be provided with telecommunication circuit, by the computer realization network management, has expanded application function;
5. the utility model can show and print the networked various information of controller in use and network management of weighing owing to disposed LCD and printer interface.
Description of drawings
Fig. 1 is the projection electronic weighing weighing apparatus circuit block diagram of prior art.
Fig. 2 is that many networkings of the utility model controller of weighing is attempted by lattice network block diagram on 485 buses.
Fig. 3 is the weigh circuit block diagram of controller of the utility model networking.
Fig. 4 is the weigh circuit theory diagrams of CPU one-chip computer module of controller of the utility model networking.
Fig. 5 is weigh a driving circuit schematic diagram in the CPU one-chip computer module of controller of the utility model networking.
Fig. 6 is the weigh panel layout of controller of the utility model networking.
Fig. 7 is the weigh control circuit schematic diagram of controller of the utility model networking.
Fig. 8 is the weigh telecommunication circuit schematic diagram of controller of the utility model networking.
Embodiment
See also shown in Figure 2ly, the networking controller of weighing comprises: computing machine 300, RS485 bus 400, many networkings controller 200 of weighing; Computing machine 300 is connected with RS485 bus 400 by the RS485 converter that is arranged in the computing machine 300, many networkings controller 200 of weighing is attempted by on the RS485 bus 400, and computing machine 300 is by RS485 bus 400 and each networking weigh controller 200 bi-directional transfer of data and order.Computing machine arrives the RS485 converter by software to the control signal and the data input and output of serial ports, by RS485 bus and the individual networking of the N that is connected (N＜=32) weigh controller transmission data and order, each networking controller of weighing has different address numbers, so that computing machine is controlled each networking controller of weighing, each networking controller of weighing can carry out two-way data transmission with computing machine.
See also shown in Figure 3ly, the networking controller of weighing comprises: weighing sensor 21, analog to digital converter 22, CPU one-chip computer module 23, charactron 24, LCD 25, printer interface 26, keyboard 27, control circuit 28 and telecommunication circuit 29; The input end of weighing sensor 21 is connected with+12V power supply, and output terminal just has the signal output of a millivolt level, and its semaphore is one-to-one relationship with extraneous weight of adding up, and then imports analog to digital converter 22 into; The output terminal of weighing sensor 21 is connected with the input end of analog to digital converter 22, the output terminal of analog to digital converter 22 is connected with the input end of CPU one-chip computer module 23, CPU one-chip computer module 23 is respectively by data bus DB and chip select line CS5, CS4, CS2, CS3 and digital display tube 24, LCD 25, printer interface 26 is connected with keyboard 27, CPU single-chip microcomputer 23 is connected with control circuit 28 with signal wire by control line, the corresponding connection of control end of the output terminal of control circuit 28 and each relay of external unit, the communication interface of CPU single-chip microcomputer 23 is by receiving line RX, sending line TX is connected with telecommunication circuit 29, the output terminal D+ of telecommunication circuit 29, D-is connected with RS485 bus 400, and CPU one-chip computer module 23 is by telecommunication circuit 29 and computing machine 300 bi-directional transfer of data and order.
In controller is weighed in networking, analog to digital converter 22 adopts existing high precision dual integration A/D analog to digital converter to constitute, interference-free for guaranteeing the AD signal, analog to digital converter 22 is installed on the independent circuit board, and adopts shielding case that this circuit board and outside electromagnetic interference are isolated.Its input end is connected with the signal output part of weighing sensor 21, the weight signal input CPU one-chip computer module 23 after analog to digital converter 22 amplifies conversion that is claimed thing, because analog to digital converter 22 possesses high precision and high stability, can satisfy the requirement of Weighing; And possess arithmetic speed and sample rate far above general weight display, can satisfy the requirement of High-speed Control.
See also shown in Figure 4ly, CPU one-chip computer module 23 is made up of microprocessor 231, the crystal oscillating circuit 232, watchdog circuit 233, clock circuit 234, code translator 235, the driving circuit 236 that connect microprocessor.Microprocessor 231 adopts the microprocessor chip of Philip, and model is P89C51RD2.The function of CPU one-chip computer module 23 is to carry out the digital signal that AD conversion obtains by analog to digital converter 22 to calculate gravimetric value by linear relationship, the storages such as the value of information that gravimetric value, keyboard are called subsequently.According to weigh some control flows commonly used of controller of networking, in this controller, worked out the several Control program in advance, it is that available controller is finished common quantitative package that the user directly calls, batching, control tasks such as sorting.If any specific (special) requirements, the user can directly revise on ready-made program or by programming voluntarily, use very convenient.
In order to prevent that program from meeting accident in operational process, and set up watchdog circuit 233.The chip model that watchdog circuit 233 adopts is 5045, and the P1 of watchdog circuit 233, P6, P5 are connected with P1, P2, the P3 of microprocessor 231 respectively, and the P2 of watchdog circuit 233 is connected with the P4 of microprocessor 231.Watchdog circuit 233 regularly produces pulse in program operation process, remove watchdog circuit 233 counters, makes watchdog circuit 233 not have reset signal RES output; If program is because unexpected situation enters an endless loop, and in the time of setting, watchdog circuit 233 does not produce pulse, and watchdog circuit 22 will be exported reset signal RES, make microprocessor 231 reset, program can re-execute.
The chip model that clock circuit 234 adopts is DS12887, data terminal P4, the P5 of clock circuit 234, P6, P7, P8, P9, P10, P11 are connected with data bus DB, be connected with data terminal P39, P38, P37, P36, P35, P34, P33, the P32 of microprocessor 231 by data bus DB, the P15 of clock circuit 234, P17 by WR, RD reading writing signal line respectively with corresponding connections of P16, P17 of microprocessor 231, the sheet choosing end P13 of clock circuit 234 and the sheet of code translator 235 select holds P14 to be connected.Clock circuit 234 provides the correct current time to the networking controller of weighing, and can call current date and time in print procedure; And can watch current date and time at any time.
The chip model that code translator 235 adopts is GAL16V8, the corresponding connection of P28, P27, P26, P25, P24, P23, P22, P21, P7, P6 of the P1 of code translator 235, P2, P3, P4, P5, P6, P7, P8, P9, P11 and microprocessor 231.Code translator 235 adopts programmable logic device (PLD), and by it being carried out the PLD design, code translator 235 is realized address decoding, thereby finishes the sheet selected control system of logarithmic code pipe 24, LCD 25, printer interface 26, keyboard 27 and calendar clock chip.
Please cooperate referring to shown in Figure 5, driving circuit 236 is made up of first driving circuit 2361, second driving circuit 2362, the 3rd driving circuit 2363; The chip model that first driving circuit 2361 and second driving circuit 2362 adopt is SN74HC273, and the chip model that the 3rd driving circuit 2363 adopts is 81C55.
The D1 of first driving circuit 2361, D2, D3, D4, D5, D6, D7 data input pin P3, P18, P4, P17, P7, P14, P8, P13 are connected with data bus DB, by data terminal P39, P38, P37, P36, P35, P34, P33, the P32 corresponding connection of data bus DB with microprocessor 231, a plurality of output terminal P2 of first driving circuit 2361, P19, P5, P16, P6, P15, P9, P12 respectively with corresponding connection of each output line of each Duan Duan and the keyboard of each charactron.The chip selection signal end P1 of first driving circuit 2361 is connected with the chip selection signal output terminal P15 of code translator 235.
The D1 of second driving circuit 2362, D2, D3, D4, D5, D6, D7 data input pin P3, P18, P4, P17, P7, P14, P8, P13 are connected with data bus DB, by data terminal P39, P38, P37, P36, P35, P34, P33, the P32 corresponding connection of data bus DB with microprocessor 231, the corresponding connection of everybody end of a plurality of output terminal P2 of second driving circuit 2362, P15, P5, P12, P6, P9 and each charactron.The signal end P1 that selects of second driving circuit 2362 is connected with the chip selection signal output terminal P16 of code translator 235.
The P1 of the 3rd driving circuit 2363, P2, P3 is connected with three incoming lines of keyboard respectively, the D1 of the 3rd driving circuit 2363, D2, D3, D4, D5, D6, D7 data input pin P12, P13, P14, P15, P16, P17, P18, P19 is connected with data bus DB, data terminal P39 by data bus DB and microprocessor 231, P38, P37, P36, P35, P34, P33, P32 connects, the P32 of the 3rd driving circuit 2363, P33, P34, P35, P36, P37, P38, P39 is connected with each status signal lines respectively, be connected with each status signal end of control circuit 28 by status signal lines, the P21 of the 3rd driving circuit 2363, P22, P23, P24, P25, P26, P27, P28, P29, P30, P31 is connected with each control signal wire respectively, be connected with each control end of control circuit 28 by each control signal wire, the chip selection signal end P8 of the 3rd driving circuit 2363 is connected with the P17 of code translator 235, the IOM signal end P11 of the 3rd driving circuit 2363 is connected with the P 18 of code translator 235, and the RD end P9 of the 3rd driving circuit 2363 is connected with WR end P16 with the RD end P17 of microprocessor 231 with WR end P10.Each control signal of microprocessor 231 and code translator 235 outputs is through driving circuit 236, can more reliable driving charactron 24, LCD 25, printer interface 26, keyboard 27 normally move.
Please cooperate referring to shown in Figure 6, on the panel 210 of controller is weighed in networking, be provided with charactron viewing area, liquid crystal display district and keyboard; The charactron viewing area is made up of 6 charactrons, shows current weight in real time; The liquid crystal display district is provided with LCD 25, the controller various information in state status and the network management in use but display networkization is weighed; Keyboard is made up of 24 buttons; Wherein, numerical key [0-9], function key [A], [B], [startup], [stopping], [pre-skin], [printing], [zero setting], [peeling], [maintenance], [accumulative total], [setting], [function], [removing] and [input].
See also shown in Figure 7ly, for the undesired signal that prevents external device circuitry may directly enter controller inside by circuit, control circuit 28 is made up of the photoisolator assembly, thereby makes data transmission reliable, improves the reliability of system.
Input end P2, P4, P6, the P8 of photoelectricity coupling device assembly input circuit 282 are connected with each data terminal of external unit gauge tap/button; Output terminal P10, P12, P14, the P16 of photoelectricity coupling device assembly input circuit 282 are connected with input end P32, P33, P34, the P35 of the driving circuit 2363 of CPU one-chip computer module 23, and CPU one-chip computer module 23 reads the operating state of external unit by photoelectricity coupling device assembly input circuit 282.When the networking controller of weighing is applied in the production system, can read the duty of external unit charger.
See also shown in Figure 8ly, telecommunication circuit 29 is made of the RS485 converter; The P5 of RS485 converter is connected by RX received signal line with the RX end P10 of the microprocessor 231 of CPU one-chip computer module 23, and the P8 of RS485 converter sends signal wire with the P11 of the microprocessor 231 of CPU one-chip computer module 23 by TX and is connected; The D+ end P3 of RS485 converter is connected with the RS485 bus with D-end P2, and CPU one-chip computer module 23 can transmit data and order with the computer bidirectional in the network by telecommunication circuit 29 and RS485 bus.The networking controller of weighing has with extraneous main contents of communicating by letter: the parameter setting of scale, current time modification, state of a control, current weight, cumulative weight, cumulative number etc.By network communication, so both can save time in a large number, again simple and convenient.
The program of computing machine upper computer software adopts the VB language, and by communications protocol, many networkings controller of weighing can be followed the networking controller device address timesharing circulation communication of weighing.When controller and computing machine communication are weighed in networking, can read weighing of immediate status.
The weigh principle of work of controller of networking is, weight signal is converted to voltage signal (simulating signal) through weighing sensor 21, be converted to digital signal through analog to digital converter 22, be delivered to CPU one-chip computer module 23, CPU one-chip computer module 23 sends chip selection signal CS5, the digital area under control that shows of gating, CPU one-chip computer module 23 sends data-signal and sends to charactron 24 through data bus DB, shows current weight in real time; CPU one-chip computer module 23 sends chip selection signal CS4, gating LCD 25, and CPU one-chip computer module 23 sends data-signal and sends to LCD 25 through data bus DB, shows current state of a control in real time; CPU one-chip computer module 23 sends chip selection signal CS2, gating parallel port printer, and CPU one-chip computer module 23 sends data-signal and sends to printer interface 26 through data bus DB, print cpu one-chip computer module 23 setting contents; CPU one-chip computer module 23 sends chip selection signal CS3, gating keyboard 27, and whether CPU one-chip computer module 23 scan round keyboards have button to press, and arrive CPU one-chip computer module 23 by data bus DB return signal; The state input signal of the external unit of CPU one-chip computer module 23 scan round control circuits 28 interfaces, carrying out different software according to different input signals handles, after 23 pairs of current weight of CPU one-chip computer module scanned and judge, CPU one-chip computer module 23 was realized control automatically by the output interface of control circuit 28 to external unit (open or close).The transmission data TX of CPU one-chip computer module 23, accept data RX and transmit data and orders through 485 converters inputs RS485 bus and computing machine 300.
In sum, the utlity model has powerful CPU one-chip computer module, the user can directly revise on ready-made program or be programmed voluntarily by the user, the pattern of weighing that can automatically switch, and automatic data collection is printed automatically and is preserved data; Possess the high precision and the high stability of weighing, can satisfy the requirement of Weighing; And strong interference immunity, information transmission is reliable; Can be attempted by on 485 buses,, expand application function by the computer realization network management.
Claims (6)
1. networking controller of weighing comprises: computing machine (300), RS485 bus (400), many networkings controller (200) of weighing;
Computing machine (300) is connected with RS485 bus (400) by the RS485 converter that is arranged in the computing machine (300); Many networkings controller (200) of weighing is attempted by on the RS485 bus (400), and computing machine (300) is by RS485 bus (400) and each networking weigh controller (200) bi-directional transfer of data and order;
The described controller of weighing (200) comprising: weighing sensor (10), the analog to digital converter (22) that links to each other with weighing sensor (21), the CPU one-chip computer module (23) that is connected with analog to digital converter (22), pass through charactron (24), printer interface (26) and the keyboard (27) that data bus DB and chip select line CS5, CS2, CS3 are connected with CPU one-chip computer module (23) respectively;
It is characterized in that: also comprise LCD (25), control circuit (28) and telecommunication circuit (29);
Described LCD (25) is connected with CPU one-chip computer module (23) with chip select line CS4 by bus DB;
Described control circuit (28) is connected with CPU one-chip computer module (23) with control line by signal wire;
Described telecommunication circuit (29) is connected with the communication port of CPU one-chip computer module (23) with transmission signal wire TX by received signal line RX, output terminal D+, the D-of telecommunication circuit (29) is connected with RS485 bus (400) respectively, and CPU one-chip computer module (23) is by telecommunication circuit (29) and RS485 bus (400) and computing machine (300) bi-directional transfer of data and order.
2. the networking according to claim 1 controller of weighing is characterized in that: described CPU one-chip computer module (23) is made up of microprocessor (231), the crystal oscillating circuit (232), watchdog circuit (233), clock circuit (234), code translator (235) and the driving circuit (236) that connect microprocessor (231).
3. the networking according to claim 2 controller of weighing, it is characterized in that: described driving circuit (236) is made up of first driving circuit (2361), second driving circuit (2362), the 3rd driving circuit (2363); A plurality of data terminals of first driving circuit (2361), second driving circuit (2362), the 3rd driving circuit (2363) are connected with each data terminal of microprocessor (231) by data bus DB respectively; The corresponding connection of each chip selection signal output terminal of the chip selection signal end of first driving circuit (2361), second driving circuit (2362), the 3rd driving circuit (2363) and code translator (235); A plurality of output terminals of first driving circuit (2361) respectively with corresponding connection of each output terminal of each Duan Duan and the keyboard of each charactron; The corresponding connection of everybody end of a plurality of output terminals of second driving circuit (2362) and each charactron; A plurality of input ends of the 3rd driving circuit (2363) respectively with the corresponding connection of each incoming line of keyboard (27), a plurality of output terminals of the 3rd driving circuit (2363) respectively with the corresponding connection of each signal input end of control circuit (28), the corresponding connection of each equipment state signal output part of a plurality of input ends of the 3rd driving circuit (2363) and control circuit (28).
4. the networking according to claim 1 controller of weighing, it is characterized in that: described keyboard is made up of (24) individual button; Wherein, numerical key [0-9], function key [A], [B], [startup], [stopping], [pre-skin], [printing], [zero setting], [peeling], [maintenance], [accumulative total], [setting], [function], [removing] and [input].
5. the networking according to claim 1 controller of weighing, it is characterized in that: described control circuit (28) is made up of photoelectricity coupling device assembly output circuit (281) and photoelectrical coupler assembly input circuit (282), a plurality of input ends of photoelectrical coupler assembly output circuit (281) are connected with a plurality of output terminals of the 3rd driving circuit (2363) of CPU one-chip computer module (23) by a control signal wire, a plurality of output terminals of photoelectrical coupler assembly output circuit (281) respectively with the corresponding connection of control end of each relay of external unit, the action of CPU one-chip computer module (23) control external unit; A plurality of input ends of photoelectricity coupling device assembly input circuit (282) are connected with each data terminal of external unit gauge tap/button, a plurality of input ends of the driving circuit (2363) in a plurality of output terminals of photoelectricity coupling device assembly input circuit (282) and the CPU one-chip computer module (23) are connected, and CPU one-chip computer module (23) reads the operating state of external unit by photoelectricity coupling device assembly input circuit (282).
6. the networking according to claim 1 controller of weighing, it is characterized in that: described telecommunication circuit (29) is made of the RS485 converter; The RX end P5 of RS485 converter is connected by RX received signal line with the RX end P10 of the microprocessor (231) of CPU one-chip computer module (23), and the TX end P8 of RS485 converter sends signal wire with the TX end P11 of the microprocessor (231) of CPU one-chip computer module (23) by TX and is connected; The D+ end P3 of RS485 converter is connected with RS485 bus (400) with D-end P2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047919 CN2904149Y (en) | 2005-12-23 | 2005-12-23 | Network weighing controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047919 CN2904149Y (en) | 2005-12-23 | 2005-12-23 | Network weighing controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2904149Y true CN2904149Y (en) | 2007-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047919 Expired - Fee Related CN2904149Y (en) | 2005-12-23 | 2005-12-23 | Network weighing controller |
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| CN (1) | CN2904149Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666675B (en) * | 2008-09-02 | 2011-06-22 | 上海耀华称重系统有限公司 | Weighing indicator |
| CN103528649A (en) * | 2013-09-18 | 2014-01-22 | 宁波高诚自动化科技有限公司 | Cone-shaped sewing thread quality inspection and analysis system and method |
| CN104154977A (en) * | 2014-08-27 | 2014-11-19 | 梧州市旺捷机械制造有限公司 | Weighing instrument |
-
2005
- 2005-12-23 CN CN 200520047919 patent/CN2904149Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666675B (en) * | 2008-09-02 | 2011-06-22 | 上海耀华称重系统有限公司 | Weighing indicator |
| CN103528649A (en) * | 2013-09-18 | 2014-01-22 | 宁波高诚自动化科技有限公司 | Cone-shaped sewing thread quality inspection and analysis system and method |
| CN103528649B (en) * | 2013-09-18 | 2015-07-29 | 宁波高诚自动化科技有限公司 | Cotton sewing thread on cone quality testing analytic system and method |
| CN104154977A (en) * | 2014-08-27 | 2014-11-19 | 梧州市旺捷机械制造有限公司 | Weighing instrument |
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